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Step 12: OpenAI Codex CLI Provider - Complete
Implemented the OpenAI Codex CLI subprocess provider for gvShell Phase 3
Output
Step 12: OpenAI Codex CLI Provider
Implementation Summary
Created a subprocess provider that spawns the OpenAI Codex CLI with codex exec --json for JSONL output streaming.
| Component | Details |
|---|---|
| Main File | codexcli.go (453 lines) |
| Test File | codexcli_test.go (14 tests) |
| Location | internal/providers/codexcli/ |
Key Features
- Subprocess spawning - Uses
codex exec --json - JSONL event parsing - message, tool_call, tool_result, error, done
- Full tool access - Shell, file operations via subprocess
- Binary discovery - Uses exec.LookPath
- Configurable options:
- --model (o4-mini, gpt-5, gpt-5-codex)
- --ask-for-approval (untrusted, on-failure, on-request, never)
- --sandbox (read-only, workspace-write, danger-full-access)
- --full-auto
- --profile
- Session resume support
Test Results
PASS: TestProviderName PASS: TestEventUnmarshal (4 subtests) PASS: TestOptionsDefaults PASS: TestBuildArgs (9 subtests) PASS: TestSentinelErrors PASS: TestNewWithMissingBinary PASS: TestDefaultTimeout PASS: TestMessageStruct PASS: TestToolCallStruct PASS: TestEmptyPromptError PASS: TestSessionBusyError PASS: TestProcessResultStruct PASS: TestEventWithFlexibleContent 14 tests passed in 0.004s
Checklist Updated
gvCHECKLIST.md Step 12 marked complete. Phase 3 progress: 2/6 steps done.
What's Next?
Choose an action:
Quick Actions
Original Request
No layout configured
Details
Type
General
Status
Completed
Scope
vibetools
Tags
gvshellproviderscodex
Created
6 Jan 2026, 3:36 pm
Updated
6 Jan 2026, 3:36 pm
Timing
⏱️ 316.9s
0 tools
● TTFE 0%
● Thinking 100%
● Tools 0%
Created By
claude
Raw Data
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"id": "ad9b2d91-104f-4585-a19d-12e408b3f65b",
"type": "general",
"status": "completed",
"title": "Step 12: OpenAI Codex CLI Provider - Complete",
"description": "Implemented the OpenAI Codex CLI subprocess provider for gvShell Phase 3",
"context": {
"requestId": "927a45bc-320b-4f43-af43-df215c197276",
"output": "<div style=\"background:#1e1e1e;color:#e0e0e0;padding:20px;border-radius:8px;font-family:'Consolas','Monaco',monospace;\"><h2 style=\"font-family:sans-serif;color:#fff;margin:0 0 16px 0;\">Step 12: OpenAI Codex CLI Provider</h2><div style=\"background:#2d2d2d;padding:16px;border-radius:6px;margin-bottom:16px;\"><h3 style=\"color:#98c379;margin:0 0 12px 0;\">Implementation Summary</h3><p style=\"color:#e0e0e0;margin:0 0 12px 0;\">Created a subprocess provider that spawns the OpenAI Codex CLI with <code style=\"background:#3d3d3d;padding:2px 6px;border-radius:3px;\">codex exec --json</code> for JSONL output streaming.</p><table style=\"width:100%;border-collapse:collapse;margin-top:12px;\"><tr><th style=\"text-align:left;padding:8px;color:#61afef;border-bottom:1px solid #444;\">Component</th><th style=\"text-align:left;padding:8px;color:#61afef;border-bottom:1px solid #444;\">Details</th></tr><tr><td style=\"padding:8px;color:#e5c07b;\">Main File</td><td style=\"padding:8px;\">codexcli.go (453 lines)</td></tr><tr><td style=\"padding:8px;color:#e5c07b;\">Test File</td><td style=\"padding:8px;\">codexcli_test.go (14 tests)</td></tr><tr><td style=\"padding:8px;color:#e5c07b;\">Location</td><td style=\"padding:8px;\">internal/providers/codexcli/</td></tr></table></div><div style=\"background:#2d2d2d;padding:16px;border-radius:6px;margin-bottom:16px;\"><h3 style=\"color:#61afef;margin:0 0 12px 0;\">Key Features</h3><ul style=\"margin:0;padding-left:20px;line-height:1.8;\"><li><span style=\"color:#98c379;\">Subprocess spawning</span> - Uses <code style=\"background:#3d3d3d;padding:2px 6px;border-radius:3px;\">codex exec --json</code></li><li><span style=\"color:#98c379;\">JSONL event parsing</span> - message, tool_call, tool_result, error, done</li><li><span style=\"color:#98c379;\">Full tool access</span> - Shell, file operations via subprocess</li><li><span style=\"color:#98c379;\">Binary discovery</span> - Uses exec.LookPath</li><li><span style=\"color:#98c379;\">Configurable options</span>:<ul style=\"margin:4px 0 0 0;\"><li>--model (o4-mini, gpt-5, gpt-5-codex)</li><li>--ask-for-approval (untrusted, on-failure, on-request, never)</li><li>--sandbox (read-only, workspace-write, danger-full-access)</li><li>--full-auto</li><li>--profile</li><li>Session resume support</li></ul></li></ul></div><div style=\"background:#2d2d2d;padding:16px;border-radius:6px;margin-bottom:16px;\"><h3 style=\"color:#c678dd;margin:0 0 12px 0;\">Test Results</h3><pre style=\"background:#252525;padding:12px;border-radius:4px;overflow-x:auto;color:#98c379;margin:0;\">PASS: TestProviderName\nPASS: TestEventUnmarshal (4 subtests)\nPASS: TestOptionsDefaults\nPASS: TestBuildArgs (9 subtests)\nPASS: TestSentinelErrors\nPASS: TestNewWithMissingBinary\nPASS: TestDefaultTimeout\nPASS: TestMessageStruct\nPASS: TestToolCallStruct\nPASS: TestEmptyPromptError\nPASS: TestSessionBusyError\nPASS: TestProcessResultStruct\nPASS: TestEventWithFlexibleContent\n\n14 tests passed in 0.004s</pre></div><div style=\"background:#2d2d2d;padding:16px;border-radius:6px;\"><h3 style=\"color:#e5c07b;margin:0 0 12px 0;\">Checklist Updated</h3><p style=\"color:#7f848e;margin:0;\">gvCHECKLIST.md Step 12 marked complete. Phase 3 progress: 2/6 steps done.</p></div><div style=\"background:#2d2d2d;padding:16px;border-radius:6px;margin-top:16px;\"><h4 style=\"margin:0 0 8px 0;color:#fff;\">What's Next?</h4><p style=\"color:#9ca3af;margin:0;\">Choose an action:</p></div></div>",
"choices": [
{
"label": "Step 13: OpenAI API",
"value": "Start implementing Step 13 - OpenAI API Provider",
"primary": true
},
{
"label": "Step 14: Gemini",
"value": "Start implementing Step 14 - Gemini Provider"
},
{
"label": "Show code",
"value": "Show me the codexcli.go implementation"
}
],
"turnTiming": {
"totalMs": 316855,
"ttfeMs": 99,
"thinkingMs": 316756,
"toolExecutionMs": 0,
"toolCallCount": 0,
"thinkingPct": 100,
"toolsPct": 0,
"ttfePct": 0
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},
"createdBy": "claude",
"createdAt": "2026-01-06T05:36:07.616Z",
"updatedAt": "2026-01-06T05:36:14.227Z",
"requestId": "927a45bc-320b-4f43-af43-df215c197276",
"scope": "vibetools",
"tags": [
"gvshell",
"providers",
"codex"
],
"targetUser": "claude"
}